Preventative Medicine by Science
Verified listingAbout Preventative Medicine by Science
What is Preventative Medicine by Science?
Preventative Medicine by Science is a clinician-led wellness clinic at 826 South Northwest Highway in Barrington, Illinois. Hormone care and medical weight management are the services it leads with. It also offers cognitive evaluation and treatment, DEXA body composition analysis, sexual medicine, general wellness, advanced lab testing, genetic testing and esthetics, including neurotoxin and dermal filler treatments. Seema Pillai, APRN, FNP-BC, MSN, is the nurse practitioner who directs evaluation and follow-up.
Patients come from Lake Zurich, Inverness, North Barrington, South Barrington, Lake Barrington, Deer Park, Kildeer, Palatine, Cary, Fox River Grove, Crystal Lake, Hoffman Estates, Algonquin and across the northwest suburbs. Telemedicine visits are available for Illinois patients. The office is open Monday to Friday, 9:00 a.m. to 5:00 p.m., and Saturday, 9:00 a.m. to 12:30 p.m., and it is closed on major holidays. In its own words: "Visits are clinician-led, with a nurse practitioner directing evaluation and follow-up." Its medical weight management includes GLP-1 class medications as one option a clinician may discuss after evaluation. It does not say which one, if any, it prescribes. It has a Google rating of 5 from 8 reviews.
What does it cost?
It does not publish prices for weight management, hormone care or any other service. The first step is a free phone consultation at +1 (224) 477-6838. It is a concierge, self-pay practice and does not bill insurance for clinic visits. It does not mention HSA or financing options. A $30 fee applies to missed appointments, and there is no cancellation fee when you cancel at least 24 hours ahead. It does not say whether medication is included in program cost.
What should you ask before you book?
Ask whether the program cost includes medication, and which GLP-1 class medication, if any, would be prescribed. Ask whether any medication is brand-name or compounded, since the clinic does not say. Ask who writes each prescription and who manages follow-up. Ask what follow-up visits, repeat DEXA scans and lab work cost, since none of them are priced on the site. If you live outside Illinois, ask how you would be seen, because telemedicine is limited to Illinois patients. If you are looking for peptide therapy or longevity medicine, note that the clinic does not name either among its services.
Who is it a good fit for?
This is a good fit if you live in the northwest suburbs, plan to pay out of pocket, and want in-person, clinician-led care with follow-up over time. It is worth calling first if you need a price before booking, since none is published.
Sources: preventativemedbyscience.com, preventativemedbyscience.com/medical-weight-loss-program-and-nutrition, preventativemedbyscience.com/hormone-care, preventativemedbyscience.com/services, preventativemedbyscience.com/providers, preventativemedbyscience.com/location
Services Offered
What we confirmed
Read off Preventative Medicine by Science’s own website on 2026-10-19. These are their words, not ours.
- ✓Medical weight loss — listed on their site as “Preventative Medicine by Science offers medical weight management at our clinician-led wellness clinic in Barrington, IL.” source
- ✓Hormone therapy — listed on their site as “The practice offers bioidentical hormone replacement therapy (BHRT) for men and women — but therapy is never the starting point.” source
Hours
Monday–Friday 9:00 a.m.–5:00 p.m.; Saturday 9:00 a.m.–12:30 p.m. Closed major holidays.